Dodge Nitro. Manual — part 187

C1232-DRIVE TEST: PRESSURE SENSOR

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

When Monitored:

During the Drive Test.

Set Condition:

If the Pressure Sensor fails to activate.

Diagnostic Test

1) CHECK FOR A DTC C1232-DRIVE TEST: PRESSURE SENSOR

Turn the ignition on.

With the scan tool, read and record DTCs.

With the scan tool, read and record Freeze Frame information.

Perform ECU initialization with drive test. Perform ABS VERIFICATION TEST.

Start the engine and apply the brake firmly.

With the scan tool, read and record DTCs.

Does the scan tool display: C1232-DRIVE TEST: PRESSURE SENSOR?

Yes

Go to 2).

No

Refer to the ABS INTERMITTENT CONDITION.

2) CHECK HYDRAULIC SYSTEM & BRAKE SYSTEM COMPONENT INSTALLATION &
FUNCTION

Possible Causes

HYDRAULIC/BRAKE SYSTEM COMPONENT INSTALLATION
INTEGRATED CONTROL UNIT
PRESSURE SENSOR (HYDRAULIC CONTROL UNIT)

NOTE:

This DTC must be active for the results of this test to be valid.

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro

Verify that the Anti-Lock Brakes Module and Hydraulic Control Unit are properly installed.

Verify that the hydraulic system is properly filled and bled.

Verify that the brake system components are installed and functioning properly.

Were any problems found?

Yes

Repair as necessary.

Perform ABS VERIFICATION TEST.

No

Clean contacts in HCU first if problem reoccurs replace the Integrated Control Unit in accordance
with the Service Information.

Perform ABS VERIFICATION TEST.

C1234-DRIVE TEST: SENSOR CLUSTER INSTALLATION

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

When Monitored:

During the Drive Test.

Set Condition:

If the Anti-Lock Brakes Module detects implausible Dynamics Sensor data.

Diagnostic Test

1) CHECK FOR A DTC C1234-DRIVE TEST: SENSOR CLUSTER INSTALLATION

Turn the ignition on.

With the scan tool, read and record DTCs.

Possible Causes

DYNAMICS SENSOR INSTALLATION
DYNAMICS SENSOR
ANTI-LOCK BRAKES MODULE

NOTE:

This DTC must be active for the results of this test to be valid.

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro

With the scan tool, read and record Freeze Frame information.

Perform ECU initialization with drive test. Perform ABS VERIFICATION TEST.

NOTE: The drive test requires a 90° turn.

Start the engine.

With the scan tool, read and record DTCs.

Does the scan tool display: C1234-DRIVE TEST: SENSOR CLUSTER INSTALLATION?

Yes

Go to 2).

No

Refer to the ABS INTERMITTENT CONDITION.

2) CHECK THE DYNAMICS SENSOR INSTALLATION

Turn the ignition off.

Check the Dynamics Sensor for damaged, modified, and bent mounting brackets.

Check the Dynamics Sensor mounting bolts for a loose or over tightened condition.

Were any problems found?

Yes

Repair as necessary.

Perform ABS VERIFICATION TEST.

No

Replace the Dynamics Sensor in accordance with the Service Information.

Perform ABS VERIFICATION TEST.

C1238-DRIVE TEST: UNSUCCESSFUL

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

NOTE:

Dynamics Sensor installation and mounting bolt torque is crucial for
proper operation.

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro

When Monitored:

During the Drive Test.

Set Condition:

If the Anti-Lock Brakes Module detects a fault with the Steering Angle Sensor, the Pressure Sensor, or
the Dynamics Sensor.

Diagnostic Test

1) DIAGNOSE & REPAIR ALL DTCs

Repair

Diagnose and repair all DTCs.

C1239-EMISSIONS ROLLS TEST ACTIVE

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

Theory of Operation

The functional effects are that the output signal for all wheel speeds mimic the wheel with the highest wheel
speed.

This DTC sets when the Emissions Rolls Test is active.

Close out the Emissions Rolls Test though the Gateway Module.

C123A-ESP SYSTEM SENSORS CALIBRATION

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

When Monitored:

Once per ignition cycle.

Set Condition:

Possible Causes

STEERING ANGLE SENSOR
PRESSURE SENSOR
DYNAMICS SENSOR
ANTI-LOCK BRAKES MODULE

2007 Dodge Nitro R/T

2007 BRAKES ABS - Electrical Diagnostics - Nitro